Help with my Rochester
 

I've had this truck quit some time now, a 67 C10 (327) fleetside long bed with a wood bed floor. So I chose a few projects. Replacing my Powerslide with a 200-4R which the rebuilder has now. So on to my question regarding my carb, have to add a TV cable and will likely need a geometry correction arm. Given my Rochester has no distinguishing numbers I was hopeful someone could help me identify it.
Thanks for any assistance!

Re: Help with my Rochester
 

Rochester 4Jet?
Carter?

Re: Help with my Rochester
 

The only markings are 4 jet, other than GM Rochester Carburetors, patent pending.

Re: Help with my Rochester
 

The key word is "should ", there should be numbers on it somewhere. A lot of the Rochester carbs have them on the back side. You might have to take it off to find them.

Re: Help with my Rochester
 

That's a Rochester 4G and is the original type carburetor for your application (67 truck 327).

Back then, the model numbers were often stamped into a little brass plate that was fastened underneath one of the screws that holds the carb's air horn in place. Unfortunately, it is not uncommon for those little ID tags to have been discarded or left off if the carburetor was taken apart for service or rebuild.

Re: Help with my Rochester
 

Depending on where you are at with money, you could replace the intake, air cleaner housing and carb with a Quadrajet unit. They are very common, so shouldn't cost too much. But if this runs OK, you can look at a late model car with a Q-Jet and 200-4R and copy the length of the lever. I did that with an Edelbrock on my Buick when I had a SBC and 700 (4R) in it.

Re: Help with my Rochester
 

That's a Rochester 4G, 4GC, 4 Jet - as others have said, correct for your '67 220HP 327 and usually only had a tag under one of the top screws for identification of exact model/specs. A good carburetor IMHO. Not as refined as the Quadrajet, but not a piece of garbage, either, and easier to tune than a Q-jet.

Re: Help with my Rochester
 

Agree 100%, but it's missing all the choke hardware (except the flap at the air horn). I put one of these on my '64 Malibu SS back in '70 (swapped from 2 bbl to 4 bbl), and it worked well. Of course, the Q-Jet he gets might be may be missing all the choke hardware, too.

Re: Help with my Rochester
 

Thanks for the help! I'm aware of the number tag and of course mine is missing. Checked the back side of the carb but still no identifying marks. Picking up my trans on Friday and need to make all the ancillary part arrangements.
This guy uses a manual choke from the dash. Probably a bunch of stuff missing, but in 50 years things get lost. Presently it works ok, but I think it could use a rebuild. It is possible I may perform some sort of carb rebuild/replace/retrofit, but not immediately.
Again thanks for the help.

Re: Help with my Rochester
 

I don't know anything about these carbs, but looks like it has a manual choke setup on it. I think that manual choke was factory.

Re: Help with my Rochester
 

I have the original 4 Jet in my 64 impala. I rebuilt it years ago. Runs great, has the heat pipe through the exhaust manifold for the choke.

I did learn the hard way that you must adjust the the float 1/8" lower than spec so it doesn't flood out at lights on hot days. Originally has some kind of spring on the float to help close the needle, but that isn't in the kit!

Re: Help with my Rochester
 

The 4 G Rochester is just two 2G Rochesters in a single casting. Easy to work on, just like tuning 2 2Gs.

Re: Help with my Rochester
 

Yeah, I missed that manual choke cable on my first look. heh heh

Re: Help with my Rochester
 

What about the auxilary throttle valve in the secondaries?